CN110335742A - A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically - Google Patents
A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically Download PDFInfo
- Publication number
- CN110335742A CN110335742A CN201910573686.6A CN201910573686A CN110335742A CN 110335742 A CN110335742 A CN 110335742A CN 201910573686 A CN201910573686 A CN 201910573686A CN 110335742 A CN110335742 A CN 110335742A
- Authority
- CN
- China
- Prior art keywords
- insulation shell
- blow vent
- heat insulation
- heat
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/14—Fire prevention, containment or extinguishing specially adapted for particular objects or places in connection with doors, windows, ventilators, partitions, or shutters, e.g. automatic closing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
Abstract
The present invention is provided a kind of expanded with heat and contract with cold based on gas and blocks the transformer tank of open fire automatically, including chassis, pressure change chamber is provided between the inner wall of the hemispherical heat insulation shell and the surface on chassis, the surface on chassis is fixedly connected with hemispherical heat insulation shell, the surface on chassis is fixedly connected with support, and the surface of support is fixedly installed with transformer body, and the inside of hemispherical heat insulation shell offers barrier cavity, transformer body is related to field transformer between hemispherical heat insulation shell and chassis.The space interior for blocking the transformer tank of open fire that transformer is placed on to a ventilating heat-proof automatically of being expanded with heat and contract with cold based on gas, pass through the principle of air expansion and pressure difference, the sprawling of the intensity of a fire is obstructed, quickly put out the intensity of a fire, when to effective solution transformer kindling, general fire-fighting mode cannot be controlled effectively under the stronger open fire intensity of a fire and pressure is gone out open fire, there are problems that biggish security risk.
Description
Technical field
The present invention relates to transformer technology field, specially a kind of expanded with heat and contract with cold based on gas blocks the transformation of open fire automatically
Device case.
Background technique
Transformer is a kind of principle using electromagnetic induction to change the device of alternating voltage, there is combustion in use
The risk of burning, when summer weather sweltering heat and peak of power consumption, the probability that transformer burning occurs is very big, and transformer is fired
It burns and needs to put out a fire at the first time, current majority is to be both provided with the standard configurations device such as fire extinguisher near transformer, but be also required to
Professional operates, when usually waiting until that fire-fighting work personnel arrive, the intensity of a fire burnt it is very big, it is more existing logical
Excess temperature or open fire cannot be put out a fire the water valve extinguishing device that controls using water on the transformer, and there are water flowings to lead
The risk of electricity, but dry-chemical fire extinguishing, under powerful open fire, space is larger, and air circulation is strong, especially when fire is greater
It waits, the dry powder of air-flow barrier injection artificially controls if do not passed through, is difficult effectively to put out open fire, when transformer catches fire, one
As fire-fighting mode under the stronger open fire intensity of a fire, cannot effectively control and pressure is gone out open fire, there are biggish security risk, institutes
To need a kind of expand with heat and contract with cold based on gas to block the transformer tank of open fire automatically.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of expanded with heat and contract with cold based on gas to block the transformation of open fire automatically
Device case, when solving transformer kindling, general fire-fighting mode cannot be controlled effectively under the stronger open fire intensity of a fire and pressure is gone out
There is biggish security risk in open fire.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: one kind is expanded with heat and contract with cold certainly based on gas
The dynamic transformer tank for blocking open fire, including chassis, are provided between the inner wall of the hemispherical heat insulation shell and the surface on chassis
Pressure change chamber, the surface on the chassis are fixedly connected with hemispherical heat insulation shell, and the surface on the chassis is fixedly connected with support, institute
The surface for stating support is fixedly installed with transformer body, and the inside of the hemispherical heat insulation shell offers barrier cavity, described
For transformer body between hemispherical heat insulation shell and chassis, the inner wall of the hemispherical heat insulation shell offers arched top biography
Hot mouth, the inner wall of the arched top heat transfer mouth are fixedly installed with Electromagnetic Control door, and the arched top heat transfer mouth is by pressure change chamber and hinders
It is connected to every cavity, the barrier cavity is internally provided with swelling bag, and the inner wall of the hemispherical heat insulation shell offers several
A interior blow vent, the outer surface of the hemispherical heat insulation shell offer several outer blow vents, and the outer blow vent will be external
It is connected to barrier cavity, the inner wall of the outer blow vent and interior blow vent is hinged with operating stick, the outer blow vent and Nei Tong
The inner wall of port is fixedly connected to permanent magnet, and one end of the outer blow vent and one end of interior blow vent slidably connect envelope
Plate, the material of the sealing plate include iron, and the surface of the sealing plate offers sliding slot, and the inner wall of the sliding slot slidably connects card
Block, the surface of the fixture block are fixedly connected with the surface of operating stick.
The inner wall of the barrier cavity is fixedly installed with control switch, and the inner wall of the barrier cavity is fixedly connected with iron sheet
Cabinet, the iron sheet cabinet are internally provided with compression dry powder, and the surface fixing sleeve of the iron sheet cabinet is connected to several and dusts
The inside of pressure change chamber is run through and extended in pipe, one end of the discharge tube, and the inside of the discharge tube is fixedly installed with solenoid valve,
The input terminal of the Electromagnetic Control door and the input terminal of solenoid valve are electrically connected with the output end of control switch, the hemispherical every
The surface of hot shell is hinged with operation door, and the fixed peace in surface of the operation door turns have padlock, and the surface of the operation door passes through
Padlock is fixedly connected with the surface of hemispherical heat insulation shell.
Preferably, the arched top heat transfer mouth is located at the top center position of hemispherical heat insulation shell, the transformer sheet
Body is located at the whole lower section of arched top heat transfer mouth.
Preferably, the swelling bag is located at the top of arched top heat transfer mouth, and the inside of the swelling bag is filled with air.
Preferably, the material of the Electromagnetic Control door includes iron, and the swelling bag and Electromagnetic Control door overlap.
Preferably, the outer blow vent is identical as interior blow vent quantity, and the outer blow vent and interior blow vent correspond.
Preferably, several described discharge tubes are circumferentially distributed centered on transformer body around transformer body.
Preferably, the control switch is located at the lower section of interior blow vent and outer blow vent, and the control switch is located at iron sheet
The top of cabinet.
(3) beneficial effect
(1) present invention when in use, when open fire occurs, the temperature highest at the top of flame, Electromagnetic Control door quickly by
Temperature is simultaneously passed to swelling bag by heat, and the swelling bag of swelling bag expanded by heating, expansion trails in the inside of barrier cavity, stretches
The swelling bag opened directly squeezes each operating stick, and operating stick drives sealing plate mobile, and sealing plate is in the side of interior blow vent and outer blow vent
Face moves closer to permanent magnet and is quickly adsorbed on interior blow vent and outer blow vent, and entire pressure change chamber is completely enclosed at this time, resistance
Every the entrance of outside air, while the extension of the intensity of a fire is also avoided, plays fire-retardant effect.
(2) when each interior blow vent and completely enclosed outer blow vent, swelling bag continues to expand and contact the present invention
To control switch, control switch is extruded opening, and Electromagnetic Control door and solenoid valve open simultaneously, the direct burning expansion capsule of open fire,
Swelling bag moment blows, and issues the sound of gas collisions, serves as a warning, meanwhile, the moment that solenoid valve is opened, iron sheet case
The compression dry powder in internal portion is quickly erupted by under the action of inside and outside strong pressure difference, and straight centered on transformer body
Downward injection is connect, is then washed away upwards in opposite narrow space, then rushes at transformer again under the action of arcwall again
Ontology has achieved the effect that in the comprehensive dry-chemical fire extinguishing of confined space.
(3) present invention passes through setting barrier cavity, on the one hand, and barrier cavity plays the role of storing related fire-extinguishing apparatus,
Equipment is avoided to interfere, on the other hand, barrier cavity plays good heat-blocking action in the inside of pressure change chamber, reduces hot weather pair
The high temperature of transformer body influences.
(4) present invention passes through the arc-shaped shape in surface of setting pressure change chamber, and the inner roof wall of one side arc facilitates the collection of heat
Transmitting is neutralized, on the other hand dry powder can be oriented to, dry-chemical fire extinguishing is carried out to transformer body comprehensively.
(5) transformer is placed on the space interior of a ventilating heat-proof by the present invention, passes through air expansion and pressure difference
Principle obstructed the sprawling of the intensity of a fire, quickly put out the intensity of a fire, thus when effective solution transformer kindling, it is general
Fire-fighting mode cannot be controlled effectively under the stronger open fire intensity of a fire and pressure is gone out open fire, there are problems that biggish security risk.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is schematic enlarged-scale view at A in Fig. 1 of the present invention；
Fig. 3 is closing plate structure side view of the present invention；
Fig. 4 is the outer vent constructions front view of the present invention；
Fig. 5 is operation of the present invention door front view.
Wherein, 1 chassis, 2 hemispherical heat insulation shells, 3 pressure change chambers, 4 supports, 5 transformer bodies, 6 barrier cavitys, 7 arcs
Top heat transfer mouth, 8 Electromagnetic Control doors, 9 swelling bags, blow vent in 10,11 outer blow vents, 12 operating sticks, 13 permanent magnets, 14 sealing plates,
15 sliding slots, 16 fixture blocks, 17 control switches, 18 iron sheet cabinets, 19 discharge tubes, 20 solenoid valves, 21 operation doors, 22 padlocks.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
As shown in Figs. 1-5, the embodiment of the present invention is provided a kind of expanded with heat and contract with cold based on gas and blocks the transformer of open fire automatically
Case, including chassis 1 are provided with pressure change chamber 3, the surface on chassis 1 between the inner wall of hemispherical heat insulation shell 2 and the surface on chassis 1
It is fixedly connected with hemispherical heat insulation shell 2, the surface on chassis 1 is fixedly connected with support 4, and the surface of support 4 is fixedly installed with change
Depressor ontology 5, the inside of hemispherical heat insulation shell 2 offer barrier cavity 6, and transformer body 5 is located at hemispherical heat insulation shell 2
Between chassis 1, the inner wall of hemispherical heat insulation shell 2 offers arched top heat transfer mouth 7, and arched top heat transfer mouth 7 is located at hemispherical
The top center position of heat insulation shell 2, transformer body 5 are located at the whole lower section of arched top heat transfer mouth 7, arched top heat transfer mouth 7
Inner wall is fixedly installed with Electromagnetic Control door 8, and pressure change chamber 3 is connected to by arched top heat transfer mouth 7 with barrier cavity 6, obstructs the interior of cavity 6
Portion is provided with swelling bag 9, and swelling bag 9 is located at the top of arched top heat transfer mouth 7, and the inside of swelling bag 9 is filled with air, electromagnetism control
The material of door 8 processed includes iron, and swelling bag 9 and Electromagnetic Control door 8 overlap, and the inner wall of hemispherical heat insulation shell 2 offers several
Interior blow vent 10, the outer surface of hemispherical heat insulation shell 2 offer several outer blow vents 11, outer blow vent 11 and interior blow vent
10 quantity are identical, and outer blow vent 11 is corresponded with interior blow vent 10, and outer blow vent 11 is connected to external with barrier cavity 6, outside
The inner wall of blow vent 11 and interior blow vent 10 is hinged with operating stick 12, and the inner wall of outer blow vent 11 and interior blow vent 10 is fixed
It is connected with permanent magnet 13, one end of outer blow vent 11 and one end of interior blow vent 10 slidably connect sealing plate 14, sealing plate 14
Material includes iron, and the surface of sealing plate 14 offers sliding slot 15, and the inner wall of sliding slot 15 slidably connects fixture block 16, the surface of fixture block 16
It is fixedly connected with the surface of operating stick 12.
The inner wall of barrier cavity 6 is fixedly installed with control switch 17, and the inner wall of barrier cavity 6 is fixedly connected with iron sheet cabinet
18, control switch 17 is located at the lower section of interior blow vent 10 and outer blow vent 11, and control switch 17 is located at the top of iron sheet cabinet 18,
Iron sheet cabinet 18 is internally provided with compression dry powder, and the surface fixing sleeve of iron sheet cabinet 18 is connected to several discharge tubes 19, dusts
The inside of pressure change chamber 3 is run through and extended in one end of pipe 19, several discharge tubes 19 are centered on transformer body 5 around change
Depressor ontology 5 is circumferentially distributed, and the inside of discharge tube 19 is fixedly installed with solenoid valve 20, the input terminal and electricity of Electromagnetic Control door 8
The input terminal of magnet valve 20 is electrically connected with the output end of control switch 17, and the surface of hemispherical heat insulation shell 2 is hinged with operation door
21, the surface of operation door 21 fixes peace and turns have padlock 22, and the surface of operation door 21 passes through padlock 22 and hemispherical heat insulation shell 2
Surface is fixedly connected.
Open fire occurs in use, working as, the temperature highest at the top of flame, 8 heated fast of Electromagnetic Control door simultaneously transmits temperature
It trails to the swelling bag 9 of swelling bag 9,9 expanded by heating of swelling bag, expansion in the inside of barrier cavity 6, the swelling bag to trail
9 directly squeeze each operating stick 12, and operating stick 12 drives sealing plate 14 mobile, and sealing plate 14 is in interior blow vent 10 and outer blow vent 11
Side moves closer to permanent magnet 13 and is quickly adsorbed on interior blow vent 10 and outer blow vent 11, entire pressure change chamber 3 envelope completely
It closes, has obstructed the entrance of outside air, the intensity of a fire stays in, and swelling bag 9 continues to expand and touch control switch 17, control switch
17 are extruded opening, and Electromagnetic Control door 8 and solenoid valve 20 open simultaneously, the direct burning expansion capsule 9 of open fire, and 9 moment of swelling bag is fried
It opens, issues the sound of gas collisions, warn everybody, meanwhile, the moment that solenoid valve 20 is opened, the compression inside iron sheet cabinet 18 is done
Powder is quickly erupted by under the action of inside and outside strong pressure difference, and is sprayed directly down centered on transformer body 5, so
It is washed away upwards in opposite narrow space afterwards, then rushes at transformer body 5 under the action of arcwall again again, to complete
Entirely expanded with heat and contract with cold the process that the open fire of the automatic transformer tank for blocking open fire puts out based on gas.
Claims (7)
1. a kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire, including chassis (1) automatically, it is characterised in that: described
It is provided with pressure change chamber (3) between the inner wall of hemispherical heat insulation shell (2) and the surface of chassis (1), the surface of the chassis (1) is solid
Surely it is connected with hemispherical heat insulation shell (2), the surface of the chassis (1) is fixedly connected with support (4), the table of the support (4)
Face is fixedly installed with transformer body (5), and the inside of the hemispherical heat insulation shell (2) offers barrier cavity (6), the change
Depressor ontology (5) is located between hemispherical heat insulation shell (2) and chassis (1), and the inner wall of the hemispherical heat insulation shell (2) opens up
There is arched top to conduct heat mouth (7), the inner wall of arched top heat transfer mouth (7) is fixedly installed with Electromagnetic Control door (8), the arched top
Pressure change chamber (3) is connected to by heat transfer mouth (7) with barrier cavity (6), and barrier cavity (6) is internally provided with swelling bag (9), institute
The inner wall for stating hemispherical heat insulation shell (2) offers several interior blow vents (10), the appearance of the hemispherical heat insulation shell (2)
Face offers several outer blow vents (11), and the outer blow vent (11) is connected to external with barrier cavity (6), the outer ventilation
The inner wall of mouthful (11) and interior blow vent (10) is hinged with operating stick (12), the outer blow vent (11) and interior blow vent (10)
Inner wall is fixedly connected to permanent magnet (13), one end of the outer blow vent (11) and one end company of sliding of interior blow vent (10)
It is connected to sealing plate (14), the material of the sealing plate (14) includes iron, and the surface of the sealing plate (14) offers sliding slot (15), the cunning
The inner wall of slot (15) slidably connects fixture block (16), and the surface of the fixture block (16) is fixedly connected with the surface of operating stick (12)；
The inner wall of barrier cavity (6) is fixedly installed with control switch (17), and the inner wall of barrier cavity (6) is fixedly connected
Have iron sheet cabinet (18), the iron sheet cabinet (18) is internally provided with compression dry powder, and the surface of the iron sheet cabinet (18) is solid
Surely several discharge tubes (19) are socketed with, the inside of pressure change chamber (3) is run through and extended in one end of the discharge tube (19), described
The inside of discharge tube (19) is fixedly installed with solenoid valve (20), the input terminal of the Electromagnetic Control door (8) and solenoid valve (20)
Input terminal is electrically connected with the output end of control switch (17), and the surface of the hemispherical heat insulation shell (2) is hinged with operation door
(21), the fixed peace in the surface of operation door (21) turns to have padlock (22), and the surface of operation door (21) passes through padlock (22)
It is fixedly connected with the surface of hemispherical heat insulation shell (2).
2. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: arched top heat transfer mouth (7) is located at the top center position of hemispherical heat insulation shell (2), transformer body (5) position
In the whole lower section of arched top heat transfer mouth (7).
3. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: the swelling bag (9) is located at the top of arched top heat transfer mouth (7), and the inside of the swelling bag (9) is filled with air.
4. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: the material of the Electromagnetic Control door (8) includes iron, and the swelling bag (9) and Electromagnetic Control door (8) overlap.
5. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: the outer blow vent (11) is identical as interior blow vent (10) quantity, and the outer blow vent (11) and interior blow vent (10) are one by one
It is corresponding.
6. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: several described discharge tubes (19) are circumferentially distributed centered on transformer body (5) around transformer body (5).
7. a kind of expanded with heat and contract with cold based on gas according to claim 1 blocks the transformer tank of open fire automatically, feature exists
In: the control switch (17) is located at the lower section of interior blow vent (10) and outer blow vent (11), and the control switch (17) is located at
The top of iron sheet cabinet (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573686.6A CN110335742A (en) | 2019-06-28 | 2019-06-28 | A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573686.6A CN110335742A (en) | 2019-06-28 | 2019-06-28 | A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110335742A true CN110335742A (en) | 2019-10-15 |
Family
ID=68144502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910573686.6A Withdrawn CN110335742A (en) | 2019-06-28 | 2019-06-28 | A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110335742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391121A (en) * | 2019-11-06 | 2020-07-10 | 童友丹 | Output shaft for gas-protected concrete mixer |
| CN111490470A (en) * | 2020-04-23 | 2020-08-04 | 俞国峰 | Intelligent power distribution cabinet for electric power sale |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985506A (en) * | 2014-05-26 | 2014-08-13 | 昆山达功电子有限公司 | Fire extinguishing transformer |
-
2019
- 2019-06-28 CN CN201910573686.6A patent/CN110335742A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985506A (en) * | 2014-05-26 | 2014-08-13 | 昆山达功电子有限公司 | Fire extinguishing transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391121A (en) * | 2019-11-06 | 2020-07-10 | 童友丹 | Output shaft for gas-protected concrete mixer |
| CN111391121B (en) * | 2019-11-06 | 2021-08-31 | 许昌鑫诺建材科技有限公司 | Output shaft for gas-protected concrete mixer |
| CN111490470A (en) * | 2020-04-23 | 2020-08-04 | 俞国峰 | Intelligent power distribution cabinet for electric power sale |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110335742A (en) | A kind of expanded with heat and contract with cold based on gas blocks the transformer tank of open fire automatically | |
| CN208423599U (en) | A kind of fire-type box-type substation | |
| CN214199436U (en) | Agricultural product drying room | |
| WO2013069949A1 (en) | Hot air heater using coal | |
| CN206166706U (en) | Stove for roasting duck | |
| CN204680504U (en) | A kind of transformer case | |
| CN207080093U (en) | A kind of novel heat-insulation structure for aluminum alloy doors and windows | |
| CN206829981U (en) | A kind of non-porous indoor sleeved door of induction type | |
| CN109404978A (en) | Heating stove coal smoke-backflow-proof sealing device | |
| CN208564382U (en) | A kind of building safety fire resistant doorsets | |
| CN208382296U (en) | A kind of smoke clearing machine | |
| CN207334760U (en) | Double sealed gas baffle door | |
| CN206787046U (en) | A kind of new fast energy-saving environment protection infrared warmer | |
| CN207599067U (en) | A kind of modified facilitates the fire resisting damper of unlatching | |
| CN207355946U (en) | A kind of gas rice steamer of recoverable fume afterheat | |
| CN207420378U (en) | A kind of Full-automatic smoke-removing fire resistant doorsets | |
| CN207299901U (en) | A kind of vacuum drying oven | |
| CN201930422U (en) | Protection cabinet against fire hazard | |
| CN218269569U (en) | Heating device | |
| CN219736000U (en) | Energy-saving and environment-friendly heating furnace for metal smelting engineering | |
| CN218376184U (en) | Steel fireproof door with interlayer | |
| CN216305773U (en) | Steel fire door for building | |
| CN109114635A (en) | Electric heater with defencive function | |
| CN206386971U (en) | A kind of energy-saving large stove | |
| CN114322047B (en) | Combined intelligent bathroom heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191015 |